XP Aqua Duetto 2 Replacement Controller Sponge & Corner Filters and only use this system

and only use this system when you are following a structured Balling dosing method

Over a background of inky black are countless snowy white dots arranged in horizontal lines from its nose to the base of its tail

A single spot near its pectoral fin is black and yellow

Trace element levels can be affected by coral uptake

Connection: HYDROS 2-pin Drive Port

XP Aqua Duetto 2 Replacement Controller Sponge & Corner Filters and only use this systemXP Aqua Duetto 2 Replacement Controller XP Aqua Duetto 2 Replacement Controller is a genuine replacement controller and sensor assembly for compatible XP Aqua Duetto and Duetto 2 automatic top off systems. It is used to service an existing ATO setup while reusing compatible pump, tubing, power, and mounting components as applicable. Duetto and Duetto 2 ATO Controller Replacement Genuine replacement part for XP Aqua Duetto and Duetto 2 ATO systems.